Geology

Geology

The science that comprises the study of the solid Earth and the processes by which it is shaped and changed.

Contributors in Geology

Geology

A relatively flat surface next to a stream. During floods, when the stream overflows its banks, water flows over the flood plain. Streams construct flood plains that accommodate their maximum flood ...

Gravel

Earth science; Geology

All sedimentary particles larger than two millimetres is called gravel. Gravel is subdivided into pebbles, cobbles, and boulders.

Focus

Earth science; Geology

The location where an earthquake begins. Rock ruptures at this spot, then seismic waves radiate outward in all directions.

Cleavage

Earth science; Geology

The tendency of a mineral to break along weak planes.

Greenstone

Earth science; Geology

A metamorphic rock derived from basalt or chemically equivalent rock such as gabbro. Greenstones contain sodium-rich plagioclase feldspar, chlorite, and epidote, as well as quartz. The chlorite and ...